utility to check formulas and extract variable names they calculate values for — calc_varname_from_formula • EJAM

utility to check formulas and extract variable names they calculate values for

Usage

calc_varname_from_formula(myforms)

Arguments

myforms: see calc_byformula() and formulas_ejscreen_acs$formula

Value

a vector as long as myforms input vector

Details

custom_doaggregate() may use calc_ejam()
calc_ejam() uses calc_byformula()
calc_byformula() uses calc_varname_from_formula() and maybe source_this_codetext()

custom_doaggregate() may use calc_ejam()
calc_ejam() uses calc_byformula()
calc_byformula() uses formula_varname() and maybe source_this_codetext()

Examples

EJAM:::calc_varname_from_formula(c("z=10", "b<- 1", "c <- 34", " h = 1+1", "   q=2+2"))
head(cbind(
  EJAM:::calc_varname_from_formula(formulas_ejscreen_acs$formula),
  formulas_ejscreen_acs$formula$formula)
  )